Kotlin conversion: InlineSignExternal

external-sop/src/main/kotlin/sop/external/operation/InlineSignExternal.kt

@@ -0,0 +1,40 @@
+// SPDX-FileCopyrightText: 2023 Paul Schaub <vanitasvitae@fsfe.org>
+//
+// SPDX-License-Identifier: Apache-2.0
+
+package sop.external.operation
+
+import java.io.InputStream
+import java.util.Properties
+import sop.Ready
+import sop.enums.InlineSignAs
+import sop.external.ExternalSOP
+import sop.operation.InlineSign
+
+/** Implementation of the [InlineSign] operation using an external SOP binary. */
+class InlineSignExternal(binary: String, environment: Properties) : InlineSign {
+
+    private val commandList = mutableListOf(binary, "inline-sign")
+    private val envList = ExternalSOP.propertiesToEnv(environment).toMutableList()
+
+    private var argCounter = 0
+
+    override fun mode(mode: InlineSignAs): InlineSign = apply { commandList.add("--as=$mode") }
+
+    override fun data(data: InputStream): Ready =
+        ExternalSOP.executeTransformingOperation(Runtime.getRuntime(), commandList, envList, data)
+
+    override fun noArmor(): InlineSign = apply { commandList.add("--no-armor") }
+
+    override fun key(key: InputStream): InlineSign = apply {
+        commandList.add("@ENV:KEY_$argCounter")
+        envList.add("KEY_$argCounter=${ExternalSOP.readString(key)}")
+        argCounter += 1
+    }
+
+    override fun withKeyPassword(password: ByteArray): InlineSign = apply {
+        commandList.add("--with-key-password=@ENV:WITH_KEY_PASSWORD_$argCounter")
+        envList.add("WITH_KEY_PASSWORD_$argCounter=${String(password)}")
+        argCounter += 1
+    }
+}